Türk-Alman Üniversitesi Kurumsal Akademik Arşivi
DSpace@TAÜ, Türk-Alman Üniversitesi tarafından doğrudan ve dolaylı olarak yayınlanan; kitap, makale, tez, bildiri, rapor, araştırma verisi gibi tüm akademik kaynakları uluslararası standartlarda dijital ortamda depolar, Üniversitenin akademik performansını izlemeye aracılık eder, kaynakları uzun süreli saklar ve telif haklarına uygun olarak Açık Erişime sunar.
Güncel Gönderiler
Mitigating Drought by Exogenous Potassium-mediated Improvements in Water Relation, Antioxidant Defense, Morpho-physiological and Biochemical Attributes of Black Gram [Vigna mungo (L.) Hepper]
(Agricultural Research Communication Center, 2024-12-26) Muhammad Ahmad; Ejaz Ahmad Waraich; Aneeqa Munir; Saddam Hussain; Raees Ahmed; Muhammad Aamir Iqbal; Usman Zulfiqar; Khalid F. Almutairi; Zeki Erden; Çaðdaþ Can Toprak; Md Atikur Rahman; Ayman El Sabagh
Background: Globally, drought stress (DS) incidence in early development and grain-filling stages of crops like black gram has posed a serious constraint to the growth and yield of legume crops. To ensure the food and nutritional security of the rising human population, requisites developing eco-friendly, pro-farmers and cost-effective DS mitigation strategies for imparting yield sustainability to black gram. Methods: In this trial, treatments included control group entailing control (normal watering), water spray (WA, positive control), control+50 mg L-1 K2SO4, control +100 mg L-1 K2SO4, control +150 mg L-1 K2SO4, while drought treatment included drought stress (plant exposed to 15-20% by suspending water supply), water spray (WA, positive control), drought +50 mg L-1 K2SO4, drought +100 mg L-1 K2SO4 and drought +150 mg L-1 K2SO4. Result: The results exhibited that the DS seriously declined plant growth, relative water content and water potential by 24.2% and 39.3%, respectively, inducing higher levels of malondialdehyde (MDA) content and hydrogen peroxide (H2O2) concentration that reduced cell membrane stability, stomatal conductance and photosynthetic rate, than the control. However, the foliar applied K significantly improved plant growth, plant water status, gas exchange and photosynthetic performance, chlorophyll content and antioxidant enzyme activity. Exogenous application of K further reduced lipid peroxidation, cell membrane injury and hydrogen peroxide by 12.7, 17.6 and 8.70%, respectively.
Phytochemical profile and bioactive properties of sage (
Salvia fruticosa
) and thyme (
Thymus vulgaris
) extracts
(Informa UK Limited, 2025-03-19) Kübra Aslan; Emre Erden Kopar; Kader Kelle; Hasan Karageçili; Mustafa Abdullah Yilmaz; Oguz Cakir; Saleh Alwasel; Ilhami Gulcin
We examined the phytochemical content, antioxidant, antimicrobial, anticholinergic, antidiabetic, and antiglaucoma properties of ethanol and water extracts from Salvia fruticosa (SF) and Thymus vulgaris (TV). Extracts were analyzed using four antioxidant assays, while the enzyme inhibition was tested against alpha-amylase, acetylcholinesterase (AChE), butyrylcholinesterase (BChE), and human carbonic anhydrase II (hCA II). Antimicrobial activity was evaluated against pan-resistant bacterial strains. LC-MS/MS identified rosmarinic acid as the major compound (27.61 and 34.35 mg/L in TV and SF, respectively). Ethanolic extracts had higher phenolic content (181.0 +/- 7.86 and 107.0 +/- 5.78 mu g GAE/mg for SF and TV, respectively). SF showed stronger metal-reducing capacity, while TV had superior radical scavenging ability, judging by the IC50 values (13.68 +/- 1.18 mu g/mL), defined as the concentration that reduces 50% of the enzyme activity. The highest inhibition was observed for hCA II (SF ethanolic extract, IC50 14.51 +/- 4.07 mu g/mL), AChE (SF aqueous extract, IC50 16.51 +/- 3.77 mu g/mL), and BChE (TV aqueous extract, IC50 10.60 +/- 4.93 mu g/mL). SF ethanolic extract inhibited the growth of Staphylococcus aureus and Enterococcus faecalis (11 mm at 60 mu g/mL). These findings highlight SF and TV as potential sources of natural antioxidants, enzyme inhibitors, and antimicrobials for pharmaceutical and food formulations.
Modeling and analyzing the dynamics of brucellosis disease with vaccination in the fractional derivative under real cases
(Springer Science and Business Media LLC, 2025-03-21) Bashir Al-Hdaibat; Muhammad Altaf Khan; Irfan Ahmad; Ebraheem Alzahrani; Ali Akgul
The present explores the brucellosis model in non-integer derivative by utilizing the real statistics from the mainland China. The formulation of the model first presented in integer order derivative and subsequently extended to fractional order using the Caputo derivative. The existence and uniqueness of the nonlinear fractional system is confirmed, which is the important requirement for a fractional nonlinear model. The local asymptotical stability of the fractional model when R-0 < 1 is analyzed. When R-0 <= 1, the model is found globally asymptotically stable. The existence of an endemic equilibria is given and found that the model has a unique endemic equilibrium. Using the reported cases of brucellosis in mainland China from 2004 to 2018 are considered. Graphical results for data fitting in cumulative and daily wise are presented with their respective residuals. The basic reproduction number is obtained from data fitting is R-0 = 1.0327. A numerical scheme for the Caputo case is provided in detailed and later the scheme was used to obtain the numerical results graphically. Various results regarding the disease curtail are presented graphically, that will be helpful for the disease elimination in the long run. The public health authority and the health agencies can utilize this work confidently for brucellosis control in mainland China.
Evaluation of Hydraulic and Irrigation Performances of Drip Systems in Nectarine Orchards (Prunus persica var. nucipersica) in The Mediterranean Region
(MDPI AG, 2025-03-05) Alper; Yeşim Bozkurt Çolak; Cenk Küçükyumuk; Burak Dalkılıç
This study focused on evaluating the performance of the drip irrigation systems installed in 18 different nectarines (Prunus persica var. nucipersica) orchards in the Tarsus Plain in the Mediterranean region from 2017 through 2018. The performance of the drip systems was evaluated based on parameters like average emitter discharge (Qavg), Christiansen uniformity coefficient (CU), distribution uniformity (DU), emission uniformity (EU), and system application efficiency (Ea). The results indicated that the CU varied between 81 and 98%; DU changed from 82 to 97%; EU 61-92%; absolute emission uniformity (EUa) ranged between 93 and 98%; statistical uniformity (Us) changed from 85 to 97%; application efficiency of low-quarter (AELQ) varied between 45 and 97%; potential application efficiency of low-quarter (PELQ) ranged between 55 and 83%; system application efficiency (Ea) changed from 56 to 96%; storage efficiency (Es) fluctuated between 45 and 97%; and pressure variation (Pv) 17-81% and emitter flow variations (qv) of 2-36% were determined. Although the CU, DU, and EU values were acceptable, the variations in emitter flow rates and pressures were not acceptable. The results revealed that the lower performances might be attributed to physical clogging and/or lack of system design and application practices by the farmers. It is recommended that the farmers receive appropriate training on the operation and management of drip irrigation systems.
Unlocking the Potential of Technology in Nursing Skills Education: A Randomized Controlled Trial
(Ataturk Universitesi, 2025-03-07) Zehra Göçmen Baykara; Nurcan Çalışkan; Deniz Ozturk; Ayişe Karadağ; Evrim Sarıtaş; Gulcan Eyuboglu; Sinan Aydoğan; Nevin Doğan; Ceyda Su Gündüz
Objective: This study aimed to determine the effect of illustrated checklists and web-access videos on nursing students' basic nursing knowledge levels and psychomotor skills.
Methods: This single-blind, randomized controlled trial was conducted with 205 first-year nursing students registered in a Fundamentals of Nursing course. The students were stratified by gender and randomly assigned to the experimental and control groups using simple randomization. All students participated in theoretical lectures, demonstrations, and laboratory practices. The Intervention Group's laboratory practices were supported by illustrated checklists and web-access skill videos.
Results: The intervention group's objective structured clinical exams and knowledge test scores were significantly higher than the control group's (P < .05). In total, 95.4% of the students stated that watching videos facilitated learning.
Conclusion: The study found that illustrated checklists and web-accessible skill videos improved students' knowledge and skills and that the skill videos facilitated learning, increased motivation, and enhanced clinical preparation. The widespread use of illustrated checklists and web-access skill videos in nursing skills education is suggested.
